You have a long piece of wire that carries a current of I = 2 A west-to-east and extends indefinitely. Most of the wire is shielded, but there's a stretch of ℓ = 40 cm where the wire is not shielded. Find the magnetic field at a point directly south of the wire, 10 cm from the wire (perpendicularly) and 10 cm from the western edge of where the wire is not shielded (red dot). Be sure to include the direction. A charged particle with a charge of q = +0.5 C moves past this location, flying directly east at v = 100 m/s. Find the force on the particle. A different charged particle (q = +2 C, m = 0.050 kg) travels directly west-to-east at v = 100 m/s, when it encounters a region where there is a uniform magnetic field vector of B→ = (0.1 T)⊗. Find the radius of curvature of the particle's trajectory.
Ethyl alcohol has a boiling point of 78.0∘C, a freezing point of −114∘C, a heat of vaporization of 879 kJ/kg, a heat of fusion of 109 kJ/kg, and a specific heat of 2.43 kJ/kg⋅K. How much energy must be removed from 0.510 kg of ethyl alcohol that is initially a gas at 78.0∘C so that it becomes a solid at −114∘C? Number Units